This is a discussion on Auto Lighting thread : Post all queries about automobile lighting here within Modifications & Accessories, part of the Under the Hood category; Originally Posted by KALINGA
If budget is not an issue then i will suggest for HID setup . Or may ...

@Sommos; I tend to agree for Headlamps. Fogs are a different matter.
The reason for Headlamps is very simple - halogen filamanets are transverse to the bulb while the discharge zone in an HiD is along the bulb. So the source geometries differ. Of course the Altis has HID in the high end, but then the reflector geometry is different in the two variants.

The stock headlamps on my new Grand i10 are woefully inadequate, both low and high beams. The throw is poor, as well as the spread. The amazing Bangalore roads make it much harder to drive in the night, and the poor lights can even make you miss poorly marked breakers and potholes!. Can anyone please recommend a good upgrade? open to 55/60 NB+ or any good Philips model. Don't want the flashy white/blue light, a slightly cooler temperature would be OK, but guess the yellow light works best for visibility.

Also, the fog lamps are practically useless. Please recommend a good upgrade for those as well.

After using Philips 100/90, my i10's reflector has started showing marks of melting.

Hence to prevent further damage, I am planning to get rid of relays and higher wattage. Currently for H4, Philips has 3 varities as per their site, WhiteVision (white light 4100K) , Xtreme Vision (100% more light but normal yellow light) and Bluevision(4000K, towards whitish light).

How would Xtreme vision perform as against 100/90? Especially on highways. Since the other 2 are more towards white light, I am not considering those since performance in rains is a question mark.

Quote:

Originally Posted by sgiitk

@Sommos; I tend to agree for Headlamps. Fogs are a different matter.

I thought both Dodge_Viper and Kalinga were talking about the main headlamp and not the fogs, Sir.

I currently use a 100/90 h4 philips rally. Plan to change to extreme vision 55/60. My ride is a swift relays installed. Any suggestions please help.

You won't need to change anything to fit EVs on swift. EV will be a direct fit h4.

But there will be a considerable reduction in illumination when compared to your current Rallys, especially on highways.
Inside city, EVs and Rallys both are fine, but you will see the difference on open highways.

Can't figure out why you want to downgrade from Rallys to EVs.Is there any reflector/glass fading issue?

@Sommos; I tend to agree for Headlamps. Fogs are a different matter.
The reason for Headlamps is very simple - halogen filamanets are transverse to the bulb while the discharge zone in an HiD is along the bulb. So the source geometries differ. Of course the Altis has HID in the high end, but then the reflector geometry is different in the two variants.

The Halogen bulbs for fog lamps also have transverse filaments, unlike HIDs that have discharge zone along the axis.

So the scatter effect would be same by using HID in main haedlight or in fog assembly.
I have seen enough jerks in Tata Safaris/Scorpios/i20s in Delhi NCR with HIDs in fogs and blinding everyone.
It is definitely illegal

@VineetG; you are correct except that a fog by its very nature designed for diffuse lighting, so the effect of the filament/discharge zone is very small, unlike a headlamp which has a far more focussed beam..